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SN74ALVCH32245
32-BIT BUS TRANSCEIVER
WITH 3-STATE OUTPUTS

SCES282 – OCTOBER 1999
1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
C0068 Member of the Texas Instruments
Widebus+ Family
C0068 EPIC (Enhanced-Performance Implanted
CMOS) Submicron Process
C0068 Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
C0068 Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
C0068 ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
C0068 Packaged in Plastic Fine-Pitch Ball Grid
Array Package
description
This 32-bit noninverting bus transceiver is designed for 1.65-V to 3.6-V V
CC
operation.
The SN74ALVCH32245 is designed for asynchronous communication between data buses. The
control-function implementation minimizes external timing requirements.
This device can be used as four 8-bit transceivers, two 16-bit transceivers, or one 32-bit transceiver. It allows
data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at
the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so that the
buses are effectively isolated.
To ensure the high-impedance state during power up or power down, OE should be tied to V
CC
through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The SN74ALVCH32245 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each 8-bit section)
INPUTS
OPERATION
OE DIR
L L B data to A bus
L H A data to B bus
H X Isolation
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  1999, Texas Instruments Incorporated
EPIC and Widebus+ are trademarks of Texas Instruments Incorporated.